What is the difference? x/x^2 - 3/x-4

a. 2(x+6)/(x+4)(x-4)
b. -2(x+6)/(x+4)(x-4)
c. x-3/(x+5)(x-4)
d. -2(x-6)/(x+4)(x-4)

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Write a description of each inequality. 1. -5a + 3 > 1 2. 27 - 2b < -6 (this < has a _ under it) 3. 1/2 (c + 1) > 5 (this > has a _ under it)